Question: After so many years

[Roman]

Thank you very much Suhiir.
The cluster munition is also called bombelet? or are they different?
As Pat told me understand that in indirect artillery cluster munitions is represented by ap ammo.
I'm playing with Argentina in 2015 and I use field artillery 155mm Cala30 + FH **. Has HE ammunition to 5 AP. With this artillery I have the option of cluster ammunition and I can kill tanks or armored vehicles.
I also have 155mm field artillery Cala ap 30 FH without ammunition, without ammunition cluster.
The + sign indicates cluster ammunition? Or extra ammo?
Also I have smaller caliber artillery FG.
What is the difference between FH and FG?
Thanks again.